Remember my rule #1? In order to let your accessories shine, plan what you wear accordingly, so that it doesn't overshadow your main 'pride piece'.
In today's case I knew exactly what necklace I wanted to wear, so at least Step 1/Building block #1 came easy (also quite a coincidence, since the necklace in question is entirely made up of arches).
And as I opened my wardrobe, the rainbow appeared in the sky. Good omen! (not really - rainbows are frequent in this part of the country!)